ZDI-18-143ZDI-CAN-5502

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Advantech WebAccess Node. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of the user parameter in chkLogin2.asp. The issue results from the lack of proper validation of a user-supplied string before using it to construct SQL queries. An attacker can leverage this vulnerability to disclose sensitive information under the context of the database.